Head for rubber-straining machines.



J. W. WEIR.

HEAD FOB RUBBER STRAINING MACHINES.

APPLIOATION FILED 11.11.16, 1911.

1,007,016. Patent-.ed 001211911.

. UNITED STATES PATENT OFFICE.

JAMES W. W'EIR, OF `.`BBIDGEPOBT, CONNECTICUT, ASSIGNOB T0 THE HOUSATONIC MACHINE AND TOOL COMPANY, OF BRIDGEPORT, CONNECTICUT, A. CORPORATION OF CONNECTICUT.

HEAD FOR RUBBER-STRAINING MACHINES.

To all whom 'it may concern:

Be it known that I, JAMES W. WEIR, a citizen of the United States, residing at Bridgeport, county of Fairfield, State of Connecticut, have invented an Improvement in Heads `for Rubber-Straining Machines, of which the following is a specification.

This invention relates to machines for straining' 'rubber and has for its general object to tly improve the construction of .the straining heads.

' screw 12 (indicated by It is one of the objects of the invention to produce a straining head that willnot clog 1n use.

A further object of the invention is to produce a straining head that will prevent the passage of pieces of metal and other solid matter and which may be readily taken apart for cleaning.

My novel structure is adapted for use in straining all kinds of rubber and is particularly adapted for Vstraining reclaimed rubber, that is old rubber obtained from various'sourcesV and especially rubber from old tires, which is likely to contain tacks and other pieces of metal that may have been picked up and retained by the tires.

With` these and other objects in view I have devised the novel straining head `of which the following speciiication, reference characters to indicate the several parts.

Figure l is a section of my novel straining head as in use, the screw being indicated by dotted lines; and Fig. 2 is a section on the line 2 2 in Fig. 1 looking in the direction of the arrows.

10 denotes the framework of the machine which is a heavy casting and is provided with a circular opening 11 in which the dotted lines) operates. My novel straining head extends outward from the framework of the machine and is provided with a chamber 13 in alinement with the 'opening in theV framework and into which the screw extends. The head is made in two parts which are indicated respectively by 14 and 15. Part 14 comprises a base and a central hub 16 having an external circular shoulder 17. Part 15 consists of a corresponding base and acap 18 which incloses the hub and is provided with a shoulder engaging shoulder 17 on the hub.

being used Specification of Letters Patent.

. Application 'led January 16, 1911. Serial No.

description in connec-l tion with the accompanying drawing is a` Patented Oct. 24, 1911. 602,816.

holes 22 .which taper outward from the screen, the purpose of the outward taper of the holes being to prevent the possibility of clogging. The sides of the hub and cap are provided with tapering holes 23 which taper from the inner side -of the huh outward the same as holes 22, the screen lying between the portions of the holes in the hnb and the portions in the cap. It will be noted that the tapered walls of the holes in cap 18 are in alinement with the tapered walls of the holes inthe hub. I have described the screen as consisting of ring-shaped and circular portions. It is ofcourse wholly immaterial, however, how the screen is made or of what material, wire netting ordi- Darily used. The object of the screen is to collect tacks, pieces of metal and other solid `matter that` may be in impure rubber and prevent them from being forced through theV straining head. It is of course essential that the side portions of the screen be placed .out of contact with the screw and furthermore that the screen be readily removable for cleaning. These results are effectually accomplished by the structure illustrated, that is socketing the side portion of the screen in the'circular recess. The parts of the straining head are secured to the framevwork of the machine in any ordinary or preferred manner as by bolts 24. When` ever it is required to clean the screen the bolts are taken out and the parts of the head separated, which leaves the screen whether in one or more pieces free to he removed and cleaned. The operation of the screwis the same as in ordinary rubber machines Having Clam 1mg h d nsmg h b 1. stra ea comp a u open at both ends, a perforated cap inclosing said hub, the end wall of said cap closing one end of said hub, said hub and cap being provided with complemental shoulders of different height, whereby a space is formed thus described my invention I between the hub and theicap, a screense-y cured in said space, andra circular screen held between the end wall of saidcap and the adjacent end of the hub.

2. A straining head comprisin a hub open at both ends, a perforated cap lnclosing said hub and having an annular ange, the end wall of said cap closin one end of said hub, the other end of sai hub being provided with an annular flange, said hub and cap being also provided with complemental annular shoulders of -diierent height, whereby e space is formed between the hub and the cap, a screen secured in saidspace, a

circular screen held in position by the end Wall of said cap, and means for uniting said flanges.

, openingsthat tperinwidth; a cap "-Bqr-fstraining -headu coin rising a hub open at b'othf ends v and provldedrpwith side said hub in a spaced relationf an rovide with tapering slde andbottoni openings, 'the side openings of the hub and cap belng in alinement, a screen interposed between theV sides of the cap and the hub, and a screen 25v interposed between the bottom of the cap` and the adjacent end ofthe hub.

In testimony whereof I aiix my signature in'presence of two witnesses.

JAMES W. WEIR.

A. H. CANFIELD.

inclosin 20 P 

